William m



(No Model.) W. M. SUHR.

COVERING Patented Feb. 12, 1889.

0 v 0 T N F. V N I WITNESSES:

I, 41am Mai ATTORNEYS.

- water-proof material.

. siren Sterne Parent met.

WILLIAM M. SUHR, on NEW roan, .N. Y.

EVE

SPECIFICATION forming part of Letters Patent N 0. 397,822, datedFebruary 12, 1889.

Application filed April 17, 1888 To all whom it may concern:

Be it known that I, VILLIAM M. SUHR, of the city, county, and State ofNew York, have invented a new and Improved Covering, of which thefollowing is a full, clean-and exact description.

The object of the invention is to provide a new and improved coveringadapted for protecting boilers, steam or water pipes, or any hot or coldsurfaces requiring a ive and protecting covering.

The invention is an improvement in the coveri n g for which LettersPatent N 0. 383,599 were granted to me May 29, 1888'; and it consists ofa covering provided with an inner wall composed-of fire-proof material,gauze,

and waterproof material, of an outer Wall composed of fabric, fire-proofmaterial, gauze, and water-proof material, and of a filling locatedbetween the said two walls and made of mineral-wool, rock wool,orisimilar substance.

The invention also consists of certain parts and details andcombinations of the same, as will be fully described hereinafter, andthen pointed out in the claims.

v (\I I Reference is to be .had to the accompa-nylng drawings, forming apart of this specification, in which similar letters of referenceindicate corresponding parts in both the figures.

Figure 1 is a sectional end elevation of the improvement in an openposition, and Fig. 2 is a like view of the same in a closed position asapplied to a pipe.

The improved covering A is provided with an inner wall, 13, and an outerWall, between which isplaced a filling,- D, made of a nonconducting andprotecting materialsuch as mineral wool, rock wool, asbestus fiber,hair, cork, orlike substance The inner wall, B, is made of three layers,of which the outer one, E, is made of tire-proof material-such, asasbestuson the inside of which is glued or otherwise secured the gauzeF, which is again covered by the third layer, G, formed of The outerwall, 0, is composed of four layers, of which the outer one, H, isformed by a fabric of cotton, hemp,

Wool, or other similar material saturated in .TtfiI'Q-pIOOf liquidsuchas silicate of soda,

non-conduct- Serial No. 276,936. (No model.)

alum, or other substance. The layer I next as asbestus-and is covered bya gauze, J, soaked in a fireproof substance-such as silicate of soda-andthis gauze J is covered by a Water-proof material, K, similar to the oneWall, B. I

The fabric II is provided with ping end, 11, adapted to lap over,as'shown in Fig. 2, so as to secure the covering firmly to the pipe N orto the boiler to which it is to be applied, the overlapping end H beingsecured by tacks, glue, or in any other suitable manner to the other endof the fabric.

In order to hold the filling D in place between the tWo walls, I employa stiffener, L, placed in the, middle of the filling D, and preferablymade of wire-gauze covered by a Water-proof or fire-proof material suchas that .outer walls, B and C.

for covering straight surfaces or in the manner illustrated in tlgpdrawings, so as to be better applied to on 'ed surfaces, as boilers,pipes, (to The sides'of the covering are then left open, so that. thepipe can be placed on the inner warn, as shown in Fig. 1, and then thesides are closed until they meet and locked in place by the overlappingend H of the fabric H. It will be seen that the covering protects theboiler, pipe, or other surface to which it is applied from both heatnon-conductive, water-proof, and fire-proof. The water-proof materialforms a protection against moisture and exposure to water or steam.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. A pipe-covering comprisingan inner andouter wall between which is placed a filling, said inner and outer wallseach being made of above described in relation to the inner and water,being to the fabric H is of fire-proof materialsuch an ov-erlap-.

The entire covering is made either in sheets a fire-proof material, awater-proof material,

7o above described in reference to the inner and each made of afire-proof material, a water water-proof material, andag'auze betweenthe [0 proof material, and a connecting-gauze betwo, in combination witha filling placed between the two, in combination with a filling V tweenthe said two walls and a stiffener placed between the two said walls anda fabplaced in the said filling, substantially as ric secured on theouter Wall and provided shown and describe with an overlapping end,substantially as. \VILLIAM M. SUHR. shown and described. Witnesses:

3. In a covering, an inner Wall and an otlter THEO. Gr HOSTER,

wall, each made of a fire-proof material, a C. LBEDGWICK.

